You can buy insulating bubble wrap by the metre from garden centres. Choose polythene that is specifically designed for greenhouses, as it is UV-stabilised and should last for at least three years. Here’s how to attach it.

Insulating your greenhouse with a layer of bubble polythene in winter will give your plants a helping hand through the colder months, keeping in heat but letting light through.

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You Will Need

Measuring tape

Bubble polythene

Scissors

Nails, drawing pins or wire, to fix the polythene in place

Step 1

Before buying any bubble wrap, measure the sides, roof and ends of the greenhouse.

Step 2

Starting with the sides, fix the bubble wrap to the frame using nails, drawing pins or wire, keeping it tight for extra insulation.

Step 3

When insulating the roof, fix the bubble wrap to the ridge and spread it down the glazing bars.

Step 4

Cut and fasten the bubble wrap around windows, vents and louvres so they can be opened.

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